Fossibot F800 vs Yoshino B660 SST
What is the difference?
The Fossibot F800 has 800 W of power, 840 W peak, a 512 Wh battery. The Yoshino B660 SST has 660 W of power, a 602 Wh battery.
The Fossibot F800 uses a LiFePO4 battery, the Yoshino B660 SST a lithium-ion (NMC) one. LiFePO4 generally lasts more charge cycles, so the Fossibot F800 should last longer.
The Fossibot F800 is rated for 3500 cycles, the Yoshino B660 SST is rated for 4000 cycles.
Both have a 5-year warranty.
Specs side by side
| Fossibot F800 | Yoshino B660 SST | |
|---|---|---|
| Capacity (Wh) | 512 | 602 |
| Continuous (W) | 800 | 660 |
| Peak (W) | 840 | — |
| Solar input (W) | 200 | — |
| Chemistry | LiFePO4 | NMC |
| Cycles | 3500 | 4000 |
| Expandable | — | — |
| Weight (lb) | — | 17 |
| Warranty (yr) | 5 | 5 |
| Fridge run time | 9.7 h | 11.4 h |
| CPAP run time | 11.6 h | 13.6 h |
| Wi-Fi router run time | 33.8 h | 39.7 h |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-30 / 2026-10-31. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.
Common questions
Which has more capacity, Fossibot F800 or Yoshino B660 SST?
The Yoshino B660 SST. More capacity: 602 Wh vs 512 Wh.
More comparisons
- Fossibot F800 vs Goal Zero Yeti 700
- Fossibot F800 vs Goal Zero Yeti 500
- Fossibot F800 vs Bluetti AC50B
- Fossibot F800 vs Westinghouse iGen600s
- Yoshino B660 SST vs Goal Zero Yeti 700
- Yoshino B660 SST vs Bluetti AC70
- Yoshino B660 SST vs Anker SOLIX C800 Plus
- Yoshino B660 SST vs Goal Zero Yeti 500
Compare other models → · All Fossibot models · All Yoshino models